I posted my message before and i recieved some tips, but the problem is persistent. My calls from my iax through my voip provider is suffering huge delay. The issue is very interesting. Here what I did: I placed a call through a voip provider from my console CLI. Then i ran a test "iax2 show netast" and here what i get when at the beginning of the call EMOTE -------------------- Channel RTT Jit Del Lost % IAX2/selectcom-2 1000 183 193 -1 -1 -1 -1 0 0 0 0 0 0 0 0 RTT: the asterisk ping round trip is 1000 ms,but i perform ping from shell command line, i get around 750ms. after few seconds, i ran "iax2 show netast" from asterisk CLI again, and here what i got: Channel RTT Jit Del Lost % IAX2/selectcom-2 4340 779 790 -1 -1 few seconds later, i got Channel RTT Jit Del Lost % IAX2/selectcom-2 17945 258 810 -1 Now, the final RTT is tremendous 17942 ms. But the delay is actually about four secs. Each time i check the ping from the shell command line, i pretty much get around 750ms. Where the latency the iax experiencing comming from. I am behind a nat, is there a well known issues for being behind the nat. what should i try __________________________________ Do you Yahoo!? Read only the mail you want - Yahoo! Mail SpamGuard. http://promotions.yahoo.com/new_mail
On Wed, 13 Apr 2005, chawki hammoud wrote:> RTT: the asterisk ping round trip is 1000 ms,but i > perform ping from shell command line, i get around > 750ms. > > after few seconds, i ran "iax2 show netast" from > asterisk CLI again, and here what i got: > > Channel RTT Jit Del Lost % > IAX2/selectcom-2 4340 779 790 -1 -1 > > few seconds later, i got > > Channel RTT Jit Del Lost % > IAX2/selectcom-2 17945 258 810 -1 > > Now, the final RTT is tremendous 17942 ms. But the > delay is actually about four secs.Hi, It looks to me like your connection doesn't have enough throughput for the data rate you are trying to send. Perhaps there is bandwidth shaping so that the IAX port doesn't get much bandwidth? Or, your ISP is well oversubcribed? Steve
On April 13, 2005 01:18 pm, chawki hammoud wrote:> I placed a call through a voip provider from my > console CLI. Then i ran a test "iax2 show netast" and > here what i get when at the beginning of the call > > EMOTE -------------------- > Channel RTT Jit Del Lost % > IAX2/selectcom-2 1000 183 193 -1 -1 > -1 -1 0 0 0 0 0 0 0 0 > > > RTT: the asterisk ping round trip is 1000 ms,but i > perform ping from shell command line, i get around > 750ms. > > after few seconds, i ran "iax2 show netast" from > asterisk CLI again, and here what i got: > > Channel RTT Jit Del Lost % > IAX2/selectcom-2 4340 779 790 -1 -1 > > few seconds later, i got > > Channel RTT Jit Del Lost % > IAX2/selectcom-2 17945 258 810 -1 > > Now, the final RTT is tremendous 17942 ms. But the > delay is actually about four secs. > > Each time i check the ping from the shell command > line, i pretty much get around 750ms. > > Where the latency the iax experiencing comming from. I > am behind a nat, is there a well known issues for > being behind the nat. what should i tryYou are describing the same type of jitter that I get; it isn't so much so jitter as it is a (very) late packet. There are a few sources of this, one of them being the network layer and the other being inconsitent timestamps coming from asterisk itself. Steve Kann and I (ok mostly Steve <g>) have been working on the latter. If you can consistently get this, it would be wonderful to get in contact with you offlist to see if we can recreate it between our networks. -A.